Projects group for referencing services. This group contains the core of referencing services (geotk-referencing) and various plugins. See the "Modules" links on the left side for information about individual components.
Definition of terms (derived from ISO 19111)
Parameter or set of parameters that define the position of the origin, the scale, and the orientation of a Coordinate System.
- Coordinate System
Set of mathematical rules for specifying how coordinates are to be assigned to points.
- Coordinate Reference System (often abridged as CRS)
Coordinate System that is related to an object by a Datum. The CoordinateReferenceSystem type is the base interface used in most Coordinate Operations with the Geotk library.
- Coordinate Operation
Change of coordinates, based on a one-to-one relationship, from one Coordinate Reference System to another. Map projections are special cases of Coordinate Operations.